Abiotic hydrogen generation from biotite-rich granite: A case study of the Soultz-sous-Forêts geothermal site, France

• Published in: Applied geochemistry Vol. 119; p. 104631
• Main Authors: Murray, Jesica, Clément, Alain, Fritz, Bertrand, Schmittbuhl, Jean, Bordmann, Vincent, Fleury, Jean Marc
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2020; Elsevier
• Subjects: biotite; Biotite oxidation; carbon dioxide; case studies; energy; Enhanced geothermal system; fossil fuels; France; Geochemical modelling; geochemistry; granite; Granitic basement; heat; hydrogen; hydrogen production; iron; KIRMAT; magnetite; Native hydrogen; oxidation; protons; redox potential; Sciences of the Universe; France; Geochemical modelling; KIRMAT; Native hydrogen; Granitic basement; Enhanced geothermal system; Biotite oxidation

Investigations on geochemical processes involved in H2 generation in natural reservoirs are important for the present energy transition from fossil fuels. Most studies related to native H2 focus on the serpentinisation of ultra-mafic rocks, in which the source of H2 is linked to oxidation of Fe2+-be...